CONCLUSIONS Approximately half of the meropenem orders at SQUH in Oman were inappropriate and unjustified by culture-test results. New strategies are needed to optimize the rational use of meropenem and to ensure appropriate de-escalation and discontinuation of meropenem whenever indicated. BACKGROUND COVID-19 is spreading quickly all over the world.&nbsp;Publicly released data for 1212 COVID-19 patients in Henan of China was analyzed in this paper. METHODS Various statistical and network analysis methods were employed. RESULTS We found that COVID-19 patients show gender (55% vs 45%) and age (81% aged between 21 and 60) preferences, possible causes were explored; The estimated average, mode and median incubation periods are 7.4, 4 and 7 days; Incubation periods of 92% patients were no more than 14 days; The epidemic in Henan has undergone three stages and showed high correlations with the numbers of patients recently return from Wuhan; Network analysis revealed that 208 cases were clustering infected and various people's Hospitals are the main force in treating COVID-19. CONCLUSIONS The incubation period was statistical estimated and the proposed state transition diagram can well explore the epidemic stages of emerging infectious disease. We suggest that though the quarantine measures are gradually at work, strong measures might be still needed for a period of time, since ?7.45% patients may have very long incubation periods. Migrant workers or college students are with high risk. State transition diagram can help us to recognize the time-phased nature of epidemic. Our investigations have implications for the prevention and control of COVID-19 in other regions of the world. OBJECTIVES Between-person variability in T-cell-specific interferon-gamma release assay (IGRA) responses and discordance between IGRA test formats are poorly understood. METHODS We evaluated the IFN-γ responses (QuantiFERON-TB Gold-In-Tube (QFT-GIT) TSPOT-TB) stratified according to the M.tb spoligotype of the culture isolate obtained from the same patients with confirmed active TB (n?=?91). We further analysed differences within the RD-1-encoding ESX-1 region between the different strain types using whole genome sequencing. RESULTS In HIV uninfected patients TSPOT.TB and QFT-GIT IFN-γ responses were 5-fold (p? less then ?0.01) and 2-fold higher (p? less then ?0.05) for those infected with family 33 compared to the LAM strain (additionally, TSPOT.TB responses were 5.6-fold (p? less then ?0.05) and 2.6-fold higher (p? less then ?0.05) for the patients infected with the family 33 versus the X strain and Beijing versus the LAM strain, respectively). Multivariate analysis revealed that strain type (determined by spoligotyping) was independently associated with the magnitude of the IGRA response (varied by IGRA test type) and this is likely explained by variability in the ESX-1 region of M. tuberculosis (determined by next-generation sequencing). CONCLUSIONS These data have implications for the understanding of between-person heterogeneity in IGRA responses, M. tuberculosis-specific host immunity, and the discordance between different IGRA test formats. Here we report three cases of canine trypanosomosis presented to the Veterinary Teaching Hospital in the Faculty of Veterinary Medicine and Animal Sciences at the University of Peradeniya, Sri Lanka during 2018. The cases were presented to the hospital when the dogs were already in critical condition. Confirmation of the cases was done by microscopic examination of Giemsa-stained thin blood smears. All three dogs had bilateral keratitis and anterior chamber cloudiness in eyes. Despite the intramuscular administration of diminazine aceturate, all of them subsequently died. Amplification and sequencing of a fragment of the internal transcribed spacer 1 (ITS1) of the nuclear ribosomal DNA confirmed the parasite as Trypanosoma. evansi. This is the first record of clinical cases of canine trypanosomosis in Sri Lanka. The three cases reported here came from widely separated geographical locations within the country Balangoda, Mullaitivu and Kadawatha. V.A major obstacle in osteoarthritis (OA) theranostics is the lack of a timely and accurate monitoring method. It is hypothesized that the loss of anionic glycosaminoglycans (GAGs) in articular cartilage reflects the progression of OA. Thus, this study investigated the feasibility of photoacoustic imaging (PAI) applied for monitoring the in vivo course of OA progression via GAG-targeted cationic nanoprobes. The nanoprobes were synthesized through electrostatic attraction between poly-l-Lysine and melanin (PLL-MNPs). Cartilage explants with different concentrations of GAGs incubated with PLL-MNPs to test the relationship between GAGs content and PA signal intensity. GAG activity was then evaluated in vivo in destabilization of the medial meniscus (DMM) surgically-induced mouse model. To track OA progression over time, mice were imaged consistently for 10 weeks after OA-inducing surgery. X-ray was used to verify the superiority of PAI in detecting OA. The correlation between PAI data and histologic results was alncing photoacoustic imaging (PAI) to monitor the progression of OA. The in vitro study demonstrated the ability of PLL-MNPs to detect different concentrations of GAGs with high sensitivity. We found that the contents of GAGs in vivo steadily decreased from the development of OA initial-stage to the end-point of our investigation via PAI; it reflected the course of OA in living subjects with high sensitivity. These results allow for further development in various aspects of OA research. It has potential for clinical translation and has a great impact on personalized medicine. Vascular diseases like abdominal aortic aneurysms (AAA) are characterized by a drastic remodeling of the vessel wall, accompanied with changes in the elastin and collagen content. At the macromolecular level, the elastin fibers in AAA have been reported to undergo significant structural alterations. While the undulations (waviness) of the collagen fibers is also reduced in AAA, very little is understood about changes in the collagen fibril at the sub-fiber level in AAA as well as in other vascular pathologies. In this study we investigated structural changes in collagen fibrils in human AAA tissue extracted at the time of vascular surgery and in aorta extracted from angiotensin II (AngII) infused ApoE-/- mouse model of AAA. https://www.selleckchem.com/products/importazole.html Collagen fibril structure was examined using transmission electron microscopy and atomic force microscopy. Images were analyzed to ascertain length and depth of D-periodicity, fibril diameter and fibril curvature. Abnormal collagen fibrils with compromised D-periodic banding were observed in the excised human tissue and in remodeled regions of AAA in AngII infused mice.